CN111890715A - Computer machine case punching press controlling means - Google Patents
Computer machine case punching press controlling means Download PDFInfo
- Publication number
- CN111890715A CN111890715A CN202010720464.5A CN202010720464A CN111890715A CN 111890715 A CN111890715 A CN 111890715A CN 202010720464 A CN202010720464 A CN 202010720464A CN 111890715 A CN111890715 A CN 111890715A
- Authority
- CN
- China
- Prior art keywords
- plate
- rotating shaft
- stamping
- bevel gear
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/24—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by rack-and-pinion means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/12—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by chains or belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/14—Control arrangements for mechanically-driven presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/30—Feeding material to presses
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention relates to the technical field of computer accessories and discloses a computer case stamping control device which comprises a base, wherein a stamping table is arranged on the surface of the base, a clamping device is arranged on the side surface of the stamping table, a fixing plate is arranged in the clamping device, a first rotating shaft is arranged in the fixing plate, a first gear is arranged on the surface of the first rotating shaft, a driving plate is arranged on the surface of the first rotating shaft, a return spring is arranged at the lower part of the driving plate, the computer case stamping control device is used by matching a conveyor belt and a first bevel gear, matching the first bevel gear and a second bevel gear, matching a push rod and a slide rod, and matching the slide rod and a control button, so that the stamping rhythm of a stamping plate can be automatically adjusted according to the conveying speed of the conveyor belt, and meanwhile, the stamping plate can be continuously and circularly operated, the production efficiency is improved, and the potential safety hazard of the operation of workers is reduced.
Description
Technical Field
The invention relates to the technical field of computer accessories, in particular to a computer case stamping control device.
Background
Among the components of a computer, the computer case is an important part of computer accessories and plays a main role in placing and fixing the computer accessories, and plays a role in supporting and protecting. In addition, the computer case has an important role in shielding electromagnetic radiation. The chassis typically includes a housing, brackets, various switches on the panel, indicator lights, etc. The shell is made of steel plates and plastics in a combined mode, is high in hardness and mainly plays a role in protecting elements inside the case. In the production process of the case, a punching process is carried out to process the holes on the surface of the case.
The punching press processing of current quick-witted case is that manual control stamping machine carries out the punching press, and in staff's operation process, there is certain potential safety hazard, and production efficiency also can reduce along with artificial operating time's increase, is unfavorable for the continuous production of quick-witted case, and work efficiency is not high.
In order to solve the problems, the computer case stamping control device has the advantages of automatic cycle stamping, high working efficiency and reduction of potential safety hazards of workers, reduces physical labor of the workers, improves production efficiency of products, and is beneficial to continuous production of cases.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a computer case stamping control device which has the advantages of automatic cycle stamping, high working efficiency and reduction of potential safety hazards of workers, and solves the problems of certain potential safety hazards in operation, low working efficiency and inconvenience for continuous work of the existing device.
(II) technical scheme
In order to realize the purposes of automatic cycle stamping, high working efficiency and reduction of potential safety hazards of workers, the invention provides the following technical scheme: a stamping control device of a computer case comprises a base, wherein a stamping table is arranged on the surface of the base, a clamping device is arranged on the side surface of the stamping table, a fixing plate is arranged inside the clamping device, a first rotating shaft is arranged inside the fixing plate, a first gear is arranged on the surface of the first rotating shaft, a driving plate is arranged on the surface of the first rotating shaft, a reset spring is arranged on the lower portion of the driving plate, a second rotating shaft is arranged inside the fixing plate, a second gear is arranged on the surface of the second rotating shaft, a pressing plate is arranged on the surface of the second rotating shaft, a push ring is arranged on the side surface of the stamping table, a rotating shaft is arranged inside the push ring, a driving gear is arranged on the surface of the rotating shaft, a conveying belt is arranged on the side surface of the base, a first bevel gear is arranged on the side surface of the conveying belt, a, the surface of second bevel gear is provided with the push rod, the side of second bevel gear is provided with the fixed body, the inside of fixed body is provided with the slide bar, the spout has been seted up on the surface of fixed body, the inside of fixed body is provided with auxiliary spring, the surface of frame is provided with control button, the upper portion of frame is provided with drive center, drive center's lower part is provided with the punching press board, the side of punching press board is provided with the push pedal, the side of punching press board is provided with the rack.
Preferably, the clamping devices are symmetrically distributed on two sides of the stamping table.
Preferably, the first gear is fixedly connected with the first rotating shaft and is matched with the second gear.
Preferably, the driving plate is fixedly connected with the first rotating shaft and is matched with the push plate.
Preferably, the push rings are symmetrically distributed on one side, close to the conveyor belt, of the stamping table, and the surface of the push rings is made of a high-friction-coefficient material.
Preferably, the driving gear is matched with the rack.
Preferably, the second bevel gear is movably connected with the fixed block and is matched with the first bevel gear.
Preferably, the push rod is fixed on the surface of the second bevel gear and is in contact with the slide rod.
Preferably, the control button is matched with the sliding rod and corresponds to the position of the fixed body.
(III) advantageous effects
Compared with the prior art, the invention provides a computer case stamping control device, which has the following beneficial effects:
1. this computer machine case punching press controlling means uses through the cooperation of conveyer belt with first bevel gear, and first bevel gear uses with the cooperation of second bevel gear, and the cooperation of push rod and slide bar is used, and the slide bar is used with control button's cooperation, makes the punching press rhythm of punching press board adjust according to the transfer rate of conveyer belt automatically, can carry out continuous cycle operation to the punching press board simultaneously, has improved production efficiency, the staff's that reduces operation potential safety hazard.
2. This computer machine case punching press controlling means, cooperation through rack and driving gear is used, the rotation axis is used with the cooperation of push ring, the messenger treats that punching press machine case plate need not manual operation, the automatic punching press that carries out in entering into the punching press platform, staff's potential safety hazard has been reduced, the labour has been reduced, the cooperation of push pedal and drive plate is used, the clamp plate is used with the cooperation of punching press platform, make machine case plate can not bounce after the punching press, the production quality of machine case plate has been improved, the potential safety hazard has been reduced.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 at A according to the present invention;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is a schematic structural diagram of the present invention at B in FIG. 3.
In the figure: 1. a machine base; 2. a punching stage; 3. a clamping device; 4. a fixing plate; 5. a first rotating shaft; 6. a first gear; 7. a drive plate; 8. a return spring; 9. a second rotating shaft; 10. a second gear; 11. pressing a plate; 12. a push ring; 13. a rotating shaft; 14. a driving gear; 15. a conveyor belt; 16. a first bevel gear; 17. a second bevel gear; 18. a push rod; 19. a fixed body; 20. a slide bar; 21. a chute; 22. an auxiliary spring; 23. a control button; 24. a drive center; 25. stamping the plate; 26. pushing the plate; 27. a rack;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a computer chassis stamping control device includes a base 1, a stamping table 2 is disposed on a surface of the base 1, and cooperates with a stamping plate 25 to stamp chassis plates, a clamping device 3 is disposed on a side surface of the stamping table 2, the clamping device 3 is symmetrically disposed on two sides of the stamping table 2 for fixing the chassis plates to prevent the chassis plates from bouncing up after stamping, a fixing plate 4 is disposed inside the clamping device 3, a first rotating shaft 5 is disposed inside the fixing plate 4, a first gear 6 is disposed on a surface of the first rotating shaft 5, the first gear 6 is fixedly connected with the first rotating shaft 5 and is adapted to a second gear 10, the second gear 10 is driven to rotate by meshing with the second gear 10, a driving plate 7 is disposed on a surface of the first rotating shaft 5, the driving plate 7 is fixedly connected with the first rotating shaft 5 and is adapted to a pushing plate 26, and cooperates with the pushing plate 26, and fixing the chassis plate.
The lower part of the driving plate 7 is provided with a return spring 8, the inside of the fixed plate 4 is provided with a second rotating shaft 9, the surface of the second rotating shaft 9 is provided with a second gear 10 which is meshed with the first gear 6, the second rotating shaft 9 is driven to rotate by the first gear 6, the surface of the second rotating shaft 9 is provided with a pressing plate 11 which is used for fixing the chassis plate, the side surface of the stamping table 2 is provided with a push ring 12, the push ring 12 is symmetrically distributed at one side of the stamping table 2 close to the conveyor belt 15, the surface adopts a high friction coefficient material and is used for pushing the chassis plate transmitted by the conveyor belt 15 into the stamping table 2 for stamping, the inside of the push ring 12 is provided with a rotating shaft 13, the surface of the rotating shaft 13 is provided with a driving gear 14, the driving gear 14 is matched with the rack 27 and is meshed with the rack 27 to drive the rotating shaft 13 to rotate, the side of the conveyor belt 15 is provided with a first bevel gear 16 which is engaged with a second bevel gear 17 to drive the second bevel gear 17 to transfer.
The surface of the first bevel gear 16 is provided with a second bevel gear 17, the second bevel gear 17 is movably connected with a fixed block 19 and is adapted to the first bevel gear 16, the surface of the second bevel gear 17 is provided with a push rod 18, the push rod 18 is fixed on the surface of the second bevel gear 17 and is in contact with a slide rod 20 for pushing the slide rod 20 to move, the side surface of the second bevel gear 17 is provided with a fixed body 19, the inside of the fixed body 19 is provided with a slide rod 20 for pushing a control button 23 to start, the surface of the fixed body 19 is provided with a slide groove 21, the inside of the fixed body 19 is provided with an auxiliary spring 22 for separating the slide rod 20 from the control button 23, the surface of the machine base 1 is provided with a control button 23 for controlling the operation of a drive center 24, the control button 23 is adapted to the slide rod 20 and corresponds to the position of the fixed, the lower part of the driving center 24 is provided with a stamping plate 25 which is matched with the stamping platform 2 for stamping the chassis plate, the side surface of the stamping plate 25 is provided with a pushing plate 26 which is matched with the driving plate 7 for use for fixing the chassis plate, and the side surface of the stamping plate 25 is provided with a rack 27 which is meshed with the driving gear 14 to drive the driving gear 14 to rotate.
When the device is used, a case plate to be punched is placed in the conveyor belt 15, the rotation of the conveyor belt 15 conveys the case plate to the surface of the machine base 1, the rotation of the conveyor belt 15 drives the first bevel gear 16 to rotate, the first bevel gear 16 drives the second bevel gear 17 to rotate through meshing with the second bevel gear 17, the second bevel gear 17 drives the push rod 18 to rotate, the push rod 18 pushes the slide rod 20 to move in the chute 21, when the conveyor belt 15 conveys the case plate to the surface of the machine base 1, the slide rod 20 just rotates to the position of the control button 23 and is in contact with and pressed by the control button 23, at the moment, the rotation of the conveyor belt 15 stops, and the slide rod 20 keeps in contact with the control button.
When the control button 23 is pressed, the driving center 24 starts to operate, pushes the punch plate 25 to move downward, meanwhile, the rack 27 is driven to move downwards, the rack 27 drives the driving gear 14 to rotate by being meshed with the driving gear 14, the driving gear 14 drives the rotating shaft 13 to rotate, the rotating shaft 13 drives the push ring 12 to rotate, the rotation of the push ring 12 drives the chassis plate on the surface of the machine base 1 to move towards the punching table 2 until the chassis plate falls into the punching table 2, and the push plate 26 is driven to move downwards when the punching plate 25 moves downwards, when the push plate 26 contacts with the drive plate 7, the drive plate 7 is pushed to rotate, the drive plate 7 drives the first rotating shaft 5 to transfer, the first rotating shaft 5 drives the first gear 6 to rotate, the first gear 6 is meshed with the second gear 10 to drive the second rotating shaft 9 to rotate, and the second rotating shaft 9 drives the pressing plate 11 to rotate, so that the pressing plate 11 compresses the chassis plate, and the chassis plate is prevented from bouncing up along with the punching plate 25 after punching.
After the punching of the chassis plate is completed, the driving center 24 drives the punching plate 25 to move upwards, when the pushing plate 26 is separated from the driving plate 7, the return spring 8 pushes the driving plate 7 to move upwards, the corresponding pressing plate 11 is separated from the chassis plate, the chassis plate can be taken away, then the conveyor belt 15 continues to rotate, the corresponding sliding rod 20 is separated from the control button 23, the driving center 24 stops operating, when a new chassis plate to be punched is conveyed to the base 1 by the conveyor belt 15, the next punching operation starts, and the chassis plates are punched in a circulating mode in sequence.
In summary, according to the computer case stamping control device, the conveyor belt 15 is used in cooperation with the first bevel gear 16, the first bevel gear 16 is used in cooperation with the second bevel gear 17, the push rod 18 is used in cooperation with the slide rod 20, and the slide rod 20 is used in cooperation with the control button 23, so that the stamping rhythm of the stamping plate 25 can be automatically adjusted according to the conveying speed of the conveyor belt 15, meanwhile, the stamping plate 25 can be continuously and circularly operated, the production efficiency is improved, and the potential safety hazard of operation of workers is reduced.
This computer machine case punching press controlling means, use through the cooperation of rack 27 with driving gear 14, rotation axis 13 is used with the cooperation of push ring 12, the messenger treats that punching press machine case plate need not manual operation, the automatic punching press that enters into in punching press platform 2, staff's potential safety hazard has been reduced, the labour has been reduced, push pedal 26 uses with the cooperation of drive plate 7, clamp plate 11 uses with the cooperation of punching press platform 2, make machine case plate can not bounce after the punching press, the production quality of machine case plate has been improved, the potential safety hazard has been reduced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a computer machine case punching press controlling means, includes frame (1), its characterized in that: the stamping machine is characterized in that a stamping table (2) is arranged on the surface of the machine base (1), a clamping device (3) is arranged on the side face of the stamping table (2), a fixing plate (4) is arranged inside the clamping device (3), a first rotating shaft (5) is arranged inside the fixing plate (4), a first gear (6) is arranged on the surface of the first rotating shaft (5), a driving plate (7) is arranged on the surface of the first rotating shaft (5), a reset spring (8) is arranged on the lower portion of the driving plate (7), a second rotating shaft (9) is arranged inside the fixing plate (4), a second gear (10) is arranged on the surface of the second rotating shaft (9), a pressing plate (11) is arranged on the surface of the second rotating shaft (9), a push ring (12) is arranged on the side face of the stamping table (2), and a rotating shaft (13) is arranged inside the push ring (12), the surface of the rotating shaft (13) is provided with a driving gear (14), the side of the machine base (1) is provided with a conveyor belt (15), the side of the conveyor belt (15) is provided with a first bevel gear (16), the surface of the first bevel gear (16) is provided with a second bevel gear (17), the surface of the second bevel gear (17) is provided with a push rod (18), the side of the second bevel gear (17) is provided with a fixing body (19), the inside of the fixing body (19) is provided with a slide rod (20), the surface of the fixing body (19) is provided with a slide groove (21), the inside of the fixing body (19) is provided with an auxiliary spring (22), the surface of the machine base (1) is provided with a control button (23), the upper part of the machine base (1) is provided with a driving center (24), and the lower part of the driving, the side of the stamping plate (25) is provided with a push plate (26), and the side of the stamping plate (25) is provided with a rack (27).
2. The computer case punching control device of claim 1, wherein: the clamping devices (3) are symmetrically distributed on two sides of the punching platform (2).
3. The computer case punching control device of claim 1, wherein: the first gear (6) is fixedly connected with the first rotating shaft (5) and is matched with the second gear (10).
4. The computer case punching control device of claim 1, wherein: the driving plate (7) is fixedly connected with the first rotating shaft (5) and is matched with the push plate (26).
5. The computer case punching control device of claim 1, wherein: the push rings (12) are symmetrically distributed on one side, close to the conveyor belt (15), of the punching table (2), and the surface of the push rings is made of a high-friction-coefficient material.
6. The computer case punching control device of claim 1, wherein: the driving gear (14) is matched with the rack (27).
7. The computer case punching control device of claim 1, wherein: the second bevel gear (17) is movably connected with the fixed block (19) and is matched with the first bevel gear (16).
8. The computer case punching control device of claim 1, wherein: the push rod (18) is fixed on the surface of the second bevel gear (17) and is in contact with the slide rod (20).
9. The computer case punching control device of claim 1, wherein: the control button (23) is matched with the sliding rod (20) and corresponds to the position of the fixed body (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010720464.5A CN111890715A (en) | 2020-07-24 | 2020-07-24 | Computer machine case punching press controlling means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010720464.5A CN111890715A (en) | 2020-07-24 | 2020-07-24 | Computer machine case punching press controlling means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111890715A true CN111890715A (en) | 2020-11-06 |
Family
ID=73189732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010720464.5A Withdrawn CN111890715A (en) | 2020-07-24 | 2020-07-24 | Computer machine case punching press controlling means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111890715A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112917976A (en) * | 2020-12-29 | 2021-06-08 | 徐飞明 | Processing device capable of automatically packaging and utilizing self potential energy and waste recycling |
| CN112958698A (en) * | 2021-02-02 | 2021-06-15 | 蒋进军 | Computer cover plate forming, preparing and processing device |
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| CN207899945U (en) * | 2018-02-05 | 2018-09-25 | 峰川模具(东莞)有限公司 | A kind of metal plate turning waste material punching mechanism |
| CN207929825U (en) * | 2017-07-07 | 2018-10-02 | 衢州职业技术学院 | A kind of single-power Automatic-feeding stamping equipment |
| CN109420726A (en) * | 2017-08-23 | 2019-03-05 | 南京锦冠汽车零部件有限公司 | A kind of forging apparatus |
| CN208850069U (en) * | 2018-09-21 | 2019-05-10 | 东莞市炫通模切制品有限公司 | A kind of sound equipment screen cloth punching press shaping equipment |
| US20190151929A1 (en) * | 2017-11-22 | 2019-05-23 | Fanuc Corporation | Automatic cleaner and pressing device |
| CN110340233A (en) * | 2019-07-15 | 2019-10-18 | 黄广顺 | A kind of metallic plate punching mold |
| CN210475199U (en) * | 2019-07-15 | 2020-05-08 | 安徽华中天力铝业有限公司 | Aluminum foil stamping device |
-
2020
- 2020-07-24 CN CN202010720464.5A patent/CN111890715A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207929825U (en) * | 2017-07-07 | 2018-10-02 | 衢州职业技术学院 | A kind of single-power Automatic-feeding stamping equipment |
| CN109420726A (en) * | 2017-08-23 | 2019-03-05 | 南京锦冠汽车零部件有限公司 | A kind of forging apparatus |
| US20190151929A1 (en) * | 2017-11-22 | 2019-05-23 | Fanuc Corporation | Automatic cleaner and pressing device |
| CN207899945U (en) * | 2018-02-05 | 2018-09-25 | 峰川模具(东莞)有限公司 | A kind of metal plate turning waste material punching mechanism |
| CN208850069U (en) * | 2018-09-21 | 2019-05-10 | 东莞市炫通模切制品有限公司 | A kind of sound equipment screen cloth punching press shaping equipment |
| CN110340233A (en) * | 2019-07-15 | 2019-10-18 | 黄广顺 | A kind of metallic plate punching mold |
| CN210475199U (en) * | 2019-07-15 | 2020-05-08 | 安徽华中天力铝业有限公司 | Aluminum foil stamping device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112917976A (en) * | 2020-12-29 | 2021-06-08 | 徐飞明 | Processing device capable of automatically packaging and utilizing self potential energy and waste recycling |
| CN112917976B (en) * | 2020-12-29 | 2023-04-14 | 湖州创感科技有限公司 | Processing device capable of automatically packaging and utilizing self potential energy and waste recycling |
| CN112958698A (en) * | 2021-02-02 | 2021-06-15 | 蒋进军 | Computer cover plate forming, preparing and processing device |
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| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201106 |
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| WW01 | Invention patent application withdrawn after publication |